کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
67128 48466 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elucidation of the catalytic cracking pathway for unsaturated mono-, di-, and triacylglycerides on solid acid catalysts
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Elucidation of the catalytic cracking pathway for unsaturated mono-, di-, and triacylglycerides on solid acid catalysts
چکیده انگلیسی

Heterogeneous catalytic transformation of lipids to transportation fuels offers a unique opportunity to provide sustainable energy while utilizing the current petroleum refining infrastructure. The reaction chemistry for the heterogeneous catalytic cracking of unsaturated acylglycerides was studied. Mono-, di-, and triolein, which are acylglycerides with oleic acid as the fatty acid constituent, were reacted at 400 °C over H+ZSM-5, faujasite, and silica–alumina catalysts. Reactions were carried out using a pulse-type microreactor utilizing online GC analysis. This technique allowed real time evaluation of reaction products using mass spectrometry and quantitation using a thermal conductivity detector. Selected products of these reactions were further reacted in an effort to elucidate the reaction pathway for producing green fuels from unsaturated lipids. The results indicated the removal of the heteroatom from the oxygenated feedstock by formation of CO and CO2. The shape-selective zeolite catalysts (i.e. H+ZSM-5 and faujasite) promoted the formation of aromatic compounds as tertiary cracking products. Silica–alumina, an amorphous catalyst, promoted the formation of linear dienes. A reaction scheme has been proposed for the deoxygenation of lipid compounds. These results reveal the potential of using lipid feedstocks for transportation fuels.

Heterogeneous cracking reactions of unsaturated acylglyceride model compounds were investigated to determine the reaction pathway towards deoxygenation. Mono-, di-, and triolein were reacted at 400 °C over H+ZSM-5, faujasite, and silica–alumina catalysts. Reactions were carried out using a pulse-type microreactor utilizing online GC analysis. Results indicated the removal of the heteroatom by formation of CO and CO2. These results reveal the potential of using lipid feedstocks for transportation fuels.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 303, Issues 1–2, 15 April 2009, Pages 117–123
نویسندگان
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